$432+ Cheap flights from Seattle to Trenton, NJ (SEA - TTN)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/7. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — TTN
Oct 8 — Oct 151
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Trenton with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Seattle to Trenton
Cheapest
One-way
Cheapest flights from Seattle to TrentonExplore the most affordable flight options available from Seattle to Trenton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 8, 2026.
Explore the most affordable flight options available from Seattle to Trenton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 8, 2026.
This Frontier deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/47:06 pm -
2 stops13h 58m
Sat 9/127:39 pm -
2 stops22h 29m
Deal found 9/4![Frontier logo]()
$1,594
One-way flights from Seattle to TrentonSearch for one-way flight options from Seattle to Trenton. Find affordable one-way fares based on user searches. Data last updated September 8, 2026.
Search for one-way flight options from Seattle to Trenton. Find affordable one-way fares based on user searches. Data last updated September 8, 2026.
This Frontier deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected ” under the list of providers to see comparable flight deals.
Mon 12/75:25 pm -
2 stops14h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Frontier logo]()
$432
This Frontier deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/261:52 pm -
2 stops17h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Frontier logo]()
$436
This Frontier deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/115:25 pm -
2 stops14h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Frontier logo]()
$445
This Frontier deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/195:25 pm -
2 stops14h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Frontier logo]()
$482
This Frontier deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/251:52 pm -
2 stops17h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Frontier logo]()
$657
Find flight deals from Seattle to Trenton
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Trenton (TTN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 8, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,132 (Frontier) |
One-way from | $432 (Frontier) |
Popular in | August |
Cheapest in | February |
Average price | $414 |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Trenton that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 8, 2026.
Use the filters below to find and compare flights from Seattle to Trenton that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
SeattleTrenton
SEA Seattle/Tacoma Intl - TTN Trenton-Mercer
SEATTN
Seattle/Tacoma Intl
Mon 12/7
5:25 pm-10:28 am
2 stops14h 03m
Trenton-Mercer
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$432
SeattleTrenton
SEA Seattle/Tacoma Intl - TTN Trenton-Mercer
SEATTN
Seattle/Tacoma Intl
Thu 11/26
1:52 pm-10:34 am
2 stops17h 42m
Trenton-Mercer
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$436
SeattleTrenton
SEA Seattle/Tacoma Intl - TTN Trenton-Mercer
SEATTN
Seattle/Tacoma Intl
Fri 12/11
5:25 pm-10:28 am
2 stops14h 03m
Trenton-Mercer
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$445
SeattleTrenton
SEA Seattle/Tacoma Intl - TTN Trenton-Mercer
SEATTN
Seattle/Tacoma Intl
Sat 12/19
5:25 pm-10:28 am
2 stops14h 03m
Trenton-Mercer
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$482
SeattleTrenton
SEA Seattle/Tacoma Intl - TTN Trenton-Mercer
SEATTN
Seattle/Tacoma Intl
Wed 11/25
1:52 pm-10:34 am
2 stops17h 42m
Trenton-Mercer
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$657
Sorted by cheapest first
Compare providers for flights from Seattle to Trenton
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Trenton in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Seattle-Trenton, New Jersey flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Trenton, New Jersey flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Trenton, New Jersey flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-Trenton, New Jersey flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Trenton, New Jersey flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Seattle to Trenton
Have a flexible travel schedule? Discover the best time to fly to Trenton from Seattle with our price prediction graph.
SEA-TTN
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Related info for your journey
Find useful and relevant information for your journey from Seattle to Trenton. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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